- #1
pakmingki
- 93
- 1
Homework Statement
1,1,-1,3,-15,105,-945 ...
find an expression for the nth term
The Attempt at a Solution
I HAVE TO FIND THE PATTERN
Now, i know for a fact that there has to be a factorial in there somewhere, because n starts at 0, and as you can see every term is alternating except for the first 2, which means there has to be some kind of factorial in the formula.
This is in fact a secondary question. I am trying to find a formula for the nth derivative of sqrt(x+1) and knowing the formula for this sequence is crucial to finding the formula for the nth derivative.
So far i have:
there must be some factorial in there
its not an arithmetic sequence
its not a geometric sequence.
PLEASE HELP ME!